package com.iwop.moto.utils.http;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.URL;
import java.net.URLConnection;
import java.util.Map;
import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpException;
import org.apache.commons.httpclient.methods.GetMethod;
import org.apache.commons.httpclient.methods.PostMethod;
/**********************************************
 * HTTP公共类
 * @author huyuangui
 * @time 2015-12-02
 **********************************************/
public class HttpUtils {

	/**
	 * 根据Url获取数据
	 * @param url
	 * @return
	 */
	public static String executeGet(String url,String params) {
		HttpClient client = new HttpClient();
		GetMethod get =null;
		if(params!=null && params.length()>0){
			get = new GetMethod(url+"?"+params);
		}else{
			get = new GetMethod(url);
		}
		try {
			client.executeMethod(get);
			get.getParams().setContentCharset("utf-8");
			return get.getResponseBodyAsString();
		} catch (Exception e) {
			e.printStackTrace();
		}
		return "";
	}
	/***
	 * post请求
	 * @param url
	 * @param map
	 * @return
	 */
	public static String executePost(String url,Map<String, String> map){
		HttpClient client=new HttpClient();
		PostMethod post=new PostMethod(url);
		try {
			if(map!=null){
				for (Map.Entry<String, String> entry : map.entrySet()) {  
					  post.addParameter(entry.getKey(), entry.getValue());
				}  
			}
			client.executeMethod(post);
			String responseBodyAsString = post.getResponseBodyAsString();
			return responseBodyAsString;
		} catch (HttpException e) {
			e.printStackTrace();

		} catch (IOException e) {
			e.printStackTrace();
		}
		return "";
	}

	/**
	 * 向指定 URL 发送POST方法的请求
	 *
	 * @param url
	 *            发送请求的 URL
	 * @param param
	 *            请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
	 * @return 所代表远程资源的响应结果
	 */
	public static String sendPost(String url, String param) {
		PrintWriter out = null;
		BufferedReader in = null;
		String result = "";
		try {
			//param = new String(param.getBytes("utf-8"));
			URL realUrl = new URL(url);
			// 打开和URL之间的连接
			URLConnection conn = realUrl.openConnection();
			// 设置通用的请求属性
			conn.setRequestProperty("accept", "*/*");
			conn.setRequestProperty("connection", "Keep-Alive");
			conn.setRequestProperty("user-agent","Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
			// 发送POST请求必须设置如下两行
			conn.setDoOutput(true);
			conn.setDoInput(true);
			// 获取URLConnection对象对应的输出流
			out = new PrintWriter(conn.getOutputStream());
			// 发送请求参数
			out.print(param);
			// flush输出流的缓冲
			out.flush();
			// 定义BufferedReader输入流来读取URL的响应
			in = new BufferedReader(new InputStreamReader(conn.getInputStream()));
			String line;
			while ((line = in.readLine()) != null) {
				result += line;
			}
		} catch (Exception e) {
			System.out.println("发送 POST 请求出现异常！"+e);
			e.printStackTrace();
		}
		//使用finally块来关闭输出流、输入流
		finally{
			try{
				if(out!=null){
					out.close();
				}
				if(in!=null){
					in.close();
				}
			}
			catch(IOException ex){
				ex.printStackTrace();
			}
		}
		return result;
	}
}